List of regular expressions commonly used in form validation_PHP tutorial

Regular expression to match Chinese characters: [u4e00-u9fa5]
Match double-byte characters (including Chinese characters): [^x00-xff]
Regular expression to match blank lines: [s| ]*
Regular expression matching HTML tags: /<(.*)>.*|<(.*) />/
Matching leading and trailing spaces Regular expression: (^s*)|(s*$)
Regular expression matching email addresses: w ([- .]w )*@w ([-.]w )*.w ([- .]w )*
Regular expression matching URL: ^[a-zA-z] ://(w (-w )*)(.(w (-w )*))*(?S *)?$
Is the matching account legal (starting with a letter, 5-16 bytes allowed, alphanumeric underscores allowed): ^[a-zA-Z][a-zA-Z0-9_]{4,15} $
Match domestic phone numbers: (d{3}-|d{4}-)?(d{8}|d{7})?
Match Tencent QQ numbers: ^[1-9]* [1-9][0-9]*$

http://www.bkjia.com/PHPjc/486171.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/486171.htmlTechArticleRegular expression matching Chinese characters: [u4e00-u9fa5] Matches double-byte characters (including Chinese characters) :[^x00-xff] Regular expression matching blank lines: [s| ]* Regular expression matching HTML tags...